Abstract: Disclosed herein is a common mode filter including: a body element including an insulating member enclosing a coil electrode pattern and a magnetic member disposed on one surface or both surfaces of the insulating member; and an insulating layer disposed on at least one side of the body element, thereby increasing an interlayer adhesion between the respective components configuring the common mode filter.

Abstract: A power supply apparatus includes a magnetic component having a coil section, a conductive case body housing the magnetic component and having an opening plane facing an axial direction of the coil section, a case lid closing the opening plane, and conductive parts electrically connecting the case body and the case lid to each other at the opening plane. The conductive parts are provided so as to satisfy a positional relationship that at least one of the conductive parts is disposed at an intersection point at which a straight line making an angle within a range of 45±15 degrees with a perpendicular line drawn from a center of the coil section to a closest one of the side plate portions of the case body to the center intersects with the closest one of side plate portions when viewed from the axial direction.

Abstract: There is provided a multilayered inductor, including: an inductor body; a coil part formed on the inductor body and having a conductive circuit and a conductive via; and external electrodes formed on both end surfaces of the inductor body, wherein the inductor body includes 65 to 95 wt % of a metallic magnetic material and 5 to 35 wt % of an organic material.

Abstract: A reactor having a good heat dissipation effect is provided. The reactor includes one coil formed by winding a wire, a magnetic core arranged inside and outside the coil and forming a closed magnetic circuit, and a case for housing an assembly of the coil and the magnetic core. An end surface of the coil has a race track shape, and the coil is housed in the case such that the axial direction of the coil is parallel to an outer bottom surface of the case. A part of an outer peripheral surface of the coil is covered with the magnetic core (outer core portion), and a remaining part thereof not covered with the magnetic core is contacted with an inner bottom surface of the case. Since a part (mainly a linear portion) of the outer peripheral surface of the coil is directly contacted with the inner bottom surface of the case, heat of the coil can be directly dissipated such that the heat is released through the case to an installation target, e.g., a water cooling base, on which the case is installed.

Abstract: A reactor 1 of the present invention includes a coil 2, a magnetic core 3 at which the coil 2 is disposed, and a case 4 storing a combined product 10 made up of the coil 2 and the magnetic core 3. The case 4 includes a bottom plate portion and a side wall portion 41A surrounding the combined product 10. The side wall portion 41A is made of an insulating resin. A hook portion 43a on which a line 71, which is coupled to a sensor 7 for measuring the physical quantity of the reactor 1, such as a temperature sensor, is hooked is integrally molded with the side wall portion 41A by the resin structuring the side wall portion 41A. Allowing the line 71 to be hooked on the hook portion 43a and fixed thereto, the sensor 7 can be prevented from being displaced or coming off because of the line 71 being pulled or the like. Thus, the sensor 7 can be maintained at a proper position.

Abstract: A vibration-suppressed transformer is fixed to a base plate and includes a magnetic lower core, two or more magnetic upper cores, primary and secondary coils. The lower core is on the base plate. The upper cores are arranged face to face over the lower core. The coils are arranged between the lower and upper cores. Each upper core contacts the lower core, on an outer side of the coils, with a first gap being provided between the upper and lower cores, on an inner side of the coils. The upper cores are extended towards each other from the outer to the inner side of the coils, with a second gap being provided therebetween. The second gap is provided therein with a non-magnetic pressing member to press the lower core against the base plate, on an inner side of the coils.

Abstract: A system comprises a tank, a radiator connected to the tank, and a component situated within the tank and susceptible to creating increasing pressure within system when under a fault condition. The radiator is configured to directionally vent pressure under excessive pressure conditions.

Abstract: In accordance with an embodiment, a power supply may include a filter stage coupled to an input terminal of a discharge circuit and a supply capacitor coupled to an output terminal of the discharge circuit. In accordance with another embodiment, a method for discharging at least one capacitor includes discharging the at least one capacitor in response to a signal at the input terminal of the discharge circuit being different from a reference signal.

Abstract: A rupture resistant system comprises a tank comprising a top member, a sidewall member, and a bottom member, and a component situated within the tank and susceptible to creating increasing pressure within the tank when under a fault condition. At least one of the top, sidewall, and bottom members is connected to another of the top, sidewall, and bottom members in a manner so as to cause an increase in inner volume of the tank under increased pressure conditions.

Abstract: The size of a status indicator for monitoring a current in a power cable is reduced by integrating a bobbin for the secondary winding with a current transformer core and integrating a circuit board including output terminals with a current transformer assembly.

Abstract: A current or voltage sensor for use with a busbar has a support body having a proximal end juxtaposed with the busbar and a distal end spaced therefrom and a U-shaped conducting bar in the proximal end and having a pair of arms having free ends transversely engaging the busbar. A Rogowski coil in the proximal end is juxtaposed with the U-shaped conducting bar. A grounded screening element at the distal end is conductive and forms a chamber open toward the U-shape conducting bar. A source electrode has a proximal end engaging the U-shaped conducting bar outside the first chamber and a distal end in the chamber. An electrical field sensor in the first chamber is juxtaposed with the distal end of the source electrode.

Abstract: A vibration-suppressed transformer is fixed to a base plate and includes a magnetic lower core, two or more magnetic upper cores, primary and secondary coils. The lower core is on the base plate. The upper cores are arranged face to face over the lower core. The coils are arranged between the lower and upper cores. Each upper core contacts the lower core, on an outer side of the coils, with a first gap being provided between the upper and lower cores, on an inner side of the coils. The upper cores are extended towards each other from the outer to the inner side of the coils, with a second gap being provided therebetween. The second gap is provided therein with a non-magnetic pressing member to press the lower core against the base plate, on an inner side of the coils.

Abstract: An element for forming an induction component contains a coil body with a core and two radially projecting flanges, which are formed on the respective axial ends of the core and of which the one flange is designed to be attached to a printed circuit board and is larger than the other flange. On its outer side, the coil body is surrounded by a shielding ring, which sits on the larger of the two flanges. To this end, the shielding ring has an inwardly directed step on the lower end corner, the one limb of which step forms an abutment surface to be placed on the inner side of the flange. The other limb forms an abutment surface to be placed against the outer edge of the flange. The step preferably runs over the entire circumference of the shielding ring. As a result, an air gap formed between the upper flange and the inner side of the shielding ring is fixed in terms of its dimensions and position.

Abstract: The invention provides a reactor to be built in a power converter. In the reactor, an induction component composed of a coil being a winding of a conductor wire, a core in which interior a magnetic path is formed and an insulation bobbin positioning and engaging a wire wound part of the coil is housed in a case to be soaked with a mold resin. Inner bottom face of the case has a plurality of surfaces having not less than two different heights letting the outside bottom of the case a reference surface, and the lower end face of the core is in contact with any of the case inner bottom surfaces excluding the lowest inner bottom surface. As a result, the reactor is suitable for on-vehicle applications to achieve reduced article variation as well as a longer service life, a shorter operation time and decreased cost.

Abstract: A reactor which may be employed in an inverter for automotive vehicles. The reactor includes a coil, a core, a casing, and a positioning member. The core is made of a solidified magnetic powder/resin mixture and has the coil embedded therein. The positioning member is disposed in the casing to position the coil relative to the casing and equipped with fins configured to stir the magnetic powder/resin mixture before solidified. Specifically, the positioning member is designed to perform two functions: one is to fix the location of the coil within the casing, and the other is to stir the magnetic powder/resin mixture through the fins, thus eliminating the need for removing a portion of the magnetic powder/resin mixture adhered to the fins, which leads to improved productivity of the reactor.

Abstract: A core fixing member including: a core fixing part that has a plate-like shape and is to be fixed to a core; a case fixing part that has a plate-like shape and is to be fixed to a case; and at least one an arm part connecting the case fixing part with the core fixing part, and wherein the core fixing part and the case fixing part are arranged in a same plane, and the at least one arm part is formed in a shape of a letter ‘U’, and one end of the at least one arm part is connected to the core fixing part and the other end of the at least one arm part is connected to the case fixing part.

Abstract: A ultraviolet irradiation apparatus includes: an ultraviolet-irradiation water tank; a protection pipe provided in the ultraviolet-irradiation water tank; an ultraviolet lamp provided in the protection pipe to be lit up with high-frequency discharge at a frequency of 10 kHz to 10 MHz, inclusive; protection covers respectively provided on the two ends of the ultraviolet-irradiation water tank; an electronic ballast provided in one of the protection covers; and a feeder wire electrically connecting the ultraviolet lamp to the electronic ballast. Each of the ultraviolet-irradiation water tank and the protection covers is made of a conductive material with a specific conductivity and a relative magnetic permittivity whose product is equal to or larger than 1, and has a thickness at least three times as large as a skin depth at a frequency of a high-frequency current that flows through the ultraviolet lamp.

Abstract: The induction element includes an insulating substrate, a coil, a core and an insulating projection or a groove. The coil is formed on at least a surface of the insulating substrate. The core has a part around which the coil is wound. The insulating projection or the groove is formed on or in the surface of the insulating substrate between the coil and the core.

Abstract: A reactor is composed of a coil and a core placed in the inside area and outer peripheral area of the coil in a container. The core is composed of magnetic powder, non-magnetic powder, and resin. The non-magnetic powder is composed of main component powder and low elastic modulus powder. The main component powder as a main component of the non-magnetic powder is made of one or more kinds of powder of a heat conductivity which is larger than that of the resin. The low elastic modulus powder is made of one or more kinds of powder of an elastic modulus which is smaller than that of the powder forming the main component powder.

Abstract: Components having a screw thread useful for mechanical fixation of the component to a corresponding component may be equipped with electrical wire following at least part of the turns of the screw thread and thereby forming at least a part of a coil. The corresponding component may have a matching screw thread, or the component of the invention may be self-tapping, in which case a matching screw thread in the corresponding component would be superfluous. The coil may be used as charging and/or power-conversion coil and/or communication antenna. The reuse of the screw thread for a coil maximizes the coil area without consuming extra space of the component. This is in particular useful in medical electrical implant devices, such as a pace maker or a neuron pace maker in deep brain stimulation, in that the maximum size of such a pace maker is very limited.

Abstract: An ignition apparatus includes a core, primary and secondary windings and a loop-shaped magnetic return path structure. The structure includes layers of wound strip steel or wound ferritic wire stacked in an outward fashion. The core is placed in an interior of the loop forming at least one air gap between a core end surfaces and the structure. A combined core and magnetic return path structure includes a continuous loop formed by winding ferritic wire either on a spool or on a mandrel and is then bonded. The bonded winding is cut to form two C-shaped portions. Each C-shaped portion has a central yoke that extends into a pair of parallel legs. The C-shaped portions are re-assembled over primary and second windings so that the legs form a pair of parallel branches. One branch acts as the core and the other branch acts as the magnetic return path.

Abstract: The invention relates to a device for removably fixing a conductor (10) to a current transformer housing (12), comprising a fixing element (18) which runs through a retaining element (16) lying on the current transformer housing (12) and which sits at least partly against the surface of the conductor (10) when the conductor (10) is fixed on the current transformer housing (12). The invention is characterized in that the fixing element (18) runs around the circumferential surface of the conductor (10) in a looped manner when fixed.

Abstract: Provided is a reactor including a core; and a case housing the coil and the core, the core including an inner core portion arranged inside the coil and an outer core portion partly or entirely covering the outside of the coil, the outer core portion being formed of a mixture of a magnetic material and a resin. The coil is arranged such that the axial direction of the coil is substantially parallel to a bottom surface of the case. The difference in concentration of the magnetic material in the outer core portion in the axial direction of the coil is smaller than the difference in concentration of the magnetic material in the outer core portion in a direction along a side wall of the case. With the reactor, even if the outer core portion covering the outside of the coil is formed of the mixture of the magnetic material and the resin, a desirable inductance value can be easily achieved and the reactor can have good heat radiation performance.

Abstract: A primary coil of an ignition coil has a socket with a side wall having an opening, a center core having a body portion with a root located in the opening and a collar portion extending perpendicularly from the root, and a winding wound on the body portion while the socket catches start and end portions of the winding on respective winding start and end sides. The collar portion is held in the socket. The core is formed by compressing magnetic powder in two divided dies divided through dividing lines which extend along a diagonal line of a rectangle formed by projecting the collar portion on a plane perpendicular to a center axis of the core. The root on the diagonal line is exposed to the opening on the winding start side and is covered with the side wall on the winding end side.

Abstract: A spark plug coil assembly has a primary core bearing primary windings and a secondary winding spool around which secondary windings are wound and in which the primary core is received. A case receives the spool with core. The entire case can be made of composite Iron to function as a magnetic return path for the core, or a composite Iron shield can be overmolded to an otherwise plastic case.

Abstract: A ballast choke coil constructed with more than two winding coils assembled on laminate cores (LC) being held together firmly by a bracket (M1) in the manner of simulating the toroidal structure created more space for increasing the number of winding turn of the coil or alternatively allow for increase of wire size. Total number of winding turns that is needed to achieve the required inductance is divided to several coils. The new structure utilizes only half of the laminate material for producing a simple ballast choke coil unit that is similar performance to the existing fluorescent lamp ballast choke coil available in the market. Even though two units of coil (WC) are used in the construction of this ballast choke coil, the wire total weight that is used to produce a unit of ballast need not be increased.

Abstract: A slim-type high voltage transformer includes a case, and a transformer portion configured by mounting at least primary and secondary winding coils wound in the shape of a rectangular or elliptic track to protruding grooves formed in the interior of the case and then mounting a first copperplate core on the primary and secondary winding coils. In the transformer, the transformer portion further includes an insulating member interposed between the primary and secondary winding coils and the first copperplate core. Accordingly, a bobbin for winding a coil is not used, so that the height of the transformer can be minimized, thereby decreasing the size of products. Also, a winding is divided into two sections to be molded, so that the insulation and heat generation of the winding can be effectively controlled, thereby improving the stability of the transformer.

Abstract: A device for absorbing the electrical noise in cables contains a housing with a feed-through for a cable, which in the fastened position projects out of both end-faces of the housing. Externally on each of the end faces there are two strips which between them form a slot, and these strips form fixing edges bounding the slot The strips are connected to the end-faces of the housing in such a way that they are able to turn away from one another, so that their fixing edges can be moved further away or nearer along the longitudinal direction of the cable. By this means the breadth of the slot can be adapted to the flexibility and/or the diameter of the cable.

Abstract: A core fixing member including: a core fixing part that has a plate-like shape and is to be fixed to a core; a case fixing part that has a plate-like shape and is to be fixed to a case; and at least one an arm part connecting the case fixing part with the core fixing part, and wherein the core fixing part and the case fixing part are arranged in a same plane, and the at least one arm part is formed in a shape of a letter ‘U’, and one end of the at least one arm part is connected to the core fixing part and the other end of the at least one arm part is connected to the case fixing part.

Abstract: A power reactor (1) for energy transfer comprising a shaped casing (2), which sits upon a support structure, and a winding (3) which is electrically connected to an electrical energy supply network and is contained inside the shaped casing (2) with which it is associated through support means (4). The shaped casing (2) and the winding (3) are arranged a first distance (D) apart which is a function of the electrical current, of the inductance and/or of the geometry of the winding and is not less than a predetermined minimum value in order to make it possible to absorb the energy losses created by the parasite currents generated by the magnetic flux produced by the winding (3) and that engages the shaped casing (2), the first distance (D) diverging towards the shaped casing (2) from the end portions (3a, 3b) of the winding (3) crossed by the flux lines of the magnetic field that link together with the winding (3).

Abstract: An inductor includes a base and a winding assembly. The base includes an outer frame, a middle part and a connecting part. The outer frame has a first upper surface. The middle part has a second upper surface. The connecting part is connected with the outer frame and the middle part and has a third upper surface. The connecting part, the outer frame and the middle part collectively define a receptacle. The winding assembly is accommodated within the receptacle. The second upper surface of the middle part is disposed at a higher level with respect to the first upper surface of the outer frame. A first height is defined by the level difference between the second upper surface and the third upper surface. A second height of the winding assembly is smaller than the first height, so that a fourth upper surface of the winding assembly is disposed at a lower level with respect to the second upper surface after the winding assembly is accommodated within the receptacle.

Abstract: An induction device includes a casing, a coil retainer, a coil that is disposed in the casing and retained to the coil retainer and a core that is disposed in the casing. The coil extends spirally around the core. The core and the coil retainer are fixed to the casing separately.

Abstract: A reactor which may be employed in an inverter for automotive vehicles. The reactor includes a coil, a core, a casing, and a positioning member. The core is made of a solidified magnetic powder/resin mixture and has the coil embedded therein. The positioning member is disposed in the casing to position the coil relative to the casing and equipped with fins configured to stir the magnetic powder/resin mixture before solidified. Specifically, the positioning member is designed to perform two functions: one is to fax the location of the coil within the casing, and the other is to stir the magnetic powder/resin, mixture through the fins, thus eliminating the need for removing a portion of the magnetic powder/resin mixture adhered to the fins, which leads to improved productivity of the reactor.

Abstract: An assembly includes a toroidal induction component, a potting cup, and potting material. The toroidal induction component includes a conductive winding, where at least ends of the conductive winding define a lead set of the toroidal induction component. The potting cup is configured to accept the toroidal induction component and its lead set. Techniques for forming the assembly are also described.

Abstract: The invention provides a reactor to be built in a power converter. In the reactor, an induction component composed of a coil being a winding of a conductor wire, a core in which interior a magnetic path is formed and an insulation bobbin positioning and engaging a wire wound part of the coil is housed in a case to be soaked with a mold resin. Inner bottom face of the case has a plurality of surfaces having not less than two different heights letting the outside bottom of the case a reference surface, and the lower end face of the core is in contact with any of the case inner bottom surfaces excluding the lowest inner bottom surface. As a result, the reactor is suitable for on-vehicle applications to achieve reduced article variation as well as a longer service life, a shorter operation time and decreased cost.

Abstract: The invention is directed to a transformer and a method of manufacturing the same, wherein at least a portion of a core is disposed inside a shield case formed from a polymeric resin composition containing conductive particles. An encasement comprising a dielectric resin encapsulates the shield case. An electrical conductor is electrically connected to the shield case and is accessible from the exterior of the encasement.

Abstract: A lightweight inductor for the motor controller of an aircraft starter includes a toroidal inductor core divided into multiple sections that are separated by a thermally conductive, but electrically insulating, material. The inductor core is wound with wire and positioned inside of an electrically and thermally conductive container, which acts as a heat sink and EMI shield, while also reducing eddy currents within the inductor core.

Abstract: An inductance element is not interfered by peripheral circuits when mounted on a wiring board by forming a closed magnetic path. The inductance element has a small reduction of an inductance value when a direct current is superimposed, and thus has excellent direct current superimposition characteristics. The temperature coefficient of the magnetic permeability of a ferrite sintered body which constitutes a magnetic core can be positive. The temperature coefficient of the magnetic permeability of a soft magnetic resin provided as an external covering to cover a coil and to fill a space between flange sections of the magnetic core is permitted to be ?30 ppm/° C. or less.

Abstract: A high voltage split core transformer and method of assembling same is provided by which the coupling factor is improved. A split core assembly is surrounded by a secondary winding that is precisely located in a burner assembly housing. Conductive members are encased within the housing and, in conjunction with traces provided on a printed circuit board enclosing the housing cavity, define first and second primary windings about the core secondary winding. This arrangement reduces the number of turns in the secondary winding and allows the use of larger cross-sectional wire which increases the current carrying capability thereof, making the transformer suitable for D1-D5 automotive headlamp applications.

Abstract: An inductive component includes a closed magnetic core and a first conductor that runs at least twice through the interior of magnetic core. The first conductor is a solid conductor that includes several U-shaped pre-bent parts that are tightly connected to one another. The U-shaped pre-bent parts may be each be flat conductors. Flat sections of the flat conductors may run in planes oriented transversely to one another.

Abstract: A connection structure for electrical component assembly including: an electrical component assembly provided with a coil energized through a pair of electrically conductive members; and a housing that covers the electrical component assembly and that is provided with housing-side connection terminals. The electrically conductive member has a connection terminal section connectable to the housing-side connection terminal. The connection terminal section is bent toward a side departing from the coil so as to protrude toward a side of the electrical component assembly, and one of the connection terminal sections is arranged at a position deviated in an axis direction of the coil relative to the other of the connection terminal sections.

Abstract: An element for forming an induction component contains a coil body with a core and two radially projecting flanges, which are formed on the respective axial ends of the core and of which the one flange is designed to be attached to a printed circuit board and is larger than the other flange. On its outer side, the coil body is surrounded by a shielding ring, which sits on the larger of the two flanges. To this end, the shielding ring has an inwardly directed step on the lower end corner, the one limb of which step forms an abutment surface to be placed on the inner side of the flange. The other limb forms an abutment surface to be placed against the outer edge of the flange. The step preferably runs over the entire circumference of the shielding ring. As a result, an air gap formed between the upper flange and the inner side of the shielding ring is fixed in terms of its dimensions and position.

Abstract: A slim-type high voltage transformer includes a case, and a transformer portion configured by mounting at least primary and secondary winding coils wound in the shape of a rectangular or elliptic track to protruding grooves formed in the interior of the case and then mounting a first copperplate core on the primary and secondary winding coils. In the transformer, the transformer portion further includes an insulating member interposed between the primary and secondary winding coils and the first copperplate core. Accordingly, a bobbin for winding a coil is not used, so that the height of the transformer can be minimized, thereby decreasing the size of products. Also, a winding is divided into two sections to be molded, so that the insulation and heat generation of the winding can be effectively controlled, thereby improving the stability of the transformer.

Abstract: A slim-type high voltage transformer includes a case, and a plurality of transformer portions configured by mounting a plurality of primary and secondary winding coils to protruding grooves formed in the interior of the case and then mounting a first copperplate core on the primary and secondary winding coils. In the transformer, the plurality of transformer portions are disposed bilaterally symmetric, and share at least one copperplate core and an insulating member interposed between the primary and secondary winding coils and the copperplate core. Accordingly, a bobbin for winding a coil is not used, so that the height of the transformer can be minimized, thereby decreasing the size of products. Also, a winding is molded, so that the insulation and heat generation of the winding can be effectively controlled, thereby improving the stability of the transformer.

Abstract: A dry-type electrical transformer system comprises a transformer and a housing. The transformer includes vertically oriented primary and secondary windings, a core extending through the primary and secondary windings, and top and bottom core clamps securing the top and bottom of the core. The housing includes a base supporting the transformer and having an air inlet, a top including an air outlet, and side walls around the transformer, wherein the housing facilitates air flow through air passages in the windings driven by natural convection in the absence of a powered air mover. Support beams allow air into a base of the housing, and the clamps are designed to allow efficient air flow into and through the air passages in the windings. A top of the housing divides the air flow into separate streams and directs the air to separate vents that release the air vertically upward.

Abstract: An ignition coil configured for electrical communication with a spark plug of an internal combustion engine has a primary spool and a secondary spool. The primary spool has a bore and an outer surface with a low-voltage winding supported thereon. The secondary spool has a cavity with a magnetic core received therein and a substantially cylindrical outer surface. The secondary spool is received at least partially in the bore of the primary spool. A high-voltage winding is supported on the outer surface of the secondary spool. The high-voltage winding has discrete winding sectors spaced from one another along a length of the secondary spool.

Abstract: The invention relates to an ignition coil for an internal combustion engine. Said ignition coil comprises a primary coil base (2) carrying a primary winding (1) and having an especially cylindrical shape, a low voltage connection area (10) for connecting the primary winding (1) to a low voltage, a secondary winding (3) inductively coupled to the primary winding (1) and disposed on an especially cylindrical secondary coil base (4), for providing a high voltage for the spark plug of the internal combustion engine. The primary coil base (2) and the secondary coil base (4) are mounted concentric to one another. The ignition coil also comprises a high-voltage connection area (5) in which the secondary winding (3) contacts the spark plug. The aim of the invention is to improve the ignition coil of the aforementioned type with respect to its electromagnetic compatibility.

Abstract: A coil for an inductive sensor, such as a coil which is used in a sensor that operates according to the principle of electromagnetic force compensation for converting an amount of force generated by a load applied to a force-measuring cell into an electrical signal, is provided with protection against the penetration of moisture. The protection includes a protective covering with a surface-smoothing undercoating applied to the coil, on which a second level of coverage is applied as a protective coating against the penetration of moisture.

Abstract: A transformer board is disclosed. In some embodiments, the transformer board includes a base, a circuit board, a transformer having a first and second winding, a first and a second connector, a ribbon cable and a nonconductive fill material. The base has a recess within which the circuit board is positioned. The transformer is mechanically coupled to the circuit board. The first connector is configured to electrically couple to transducers within a pressure boundary of an ultrasonic flow meter and is electrically coupled to the second winding of the transformer. The ribbon cable is electrically coupled between the first winding of the transformer and the second connector. The nonconductive fill material is contained by the recess and encases the circuit board, the transformer, the coupling of the first connector to the second winding of the transformer, and the coupling of the ribbon cable to the first winding of the transformer.

Abstract: An ignition coil includes a coil body, a primary resin molded body, and a secondary resin molded body. The coil body has a primary coil and a secondary coil. The primary resin molded body has the coil body therein in a fixed relation, and the primary resin molded body has a plurality of exposed side portions that hold the coil body therebetween. The secondary resin molded body is molded to have the coil body and the primary resin molded body embedded therein. The secondary resin molded body is configured to allow the plurality of exposed side portions of the primary resin molded body to be exposed to an exterior of the secondary resin molded body.